{
    "schemaVersion": 2,
    "mediaType": "application/vnd.oci.image.index.v1+json",
    "artifactType": "application/our-top-artifact",
    "manifests": [
        {
            "mediaType": "application/vnd.oci.image.manifest.v1+json",
            "digest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
            "size": 1,
            "urls": ["https://some.example/manifest"],
            "annotations": {"manifest": "1"},
            "data": "YQ==",
            "platform": {
                "architecture": "A",
                "os": "B",
                "os.version": "C",
                "os.features": ["D"],
                "variant": "E"
            },
            "artifactType": "application/our-sub-artifact"
        }
    ],
    "subject": {
        "mediaType": "application/vnd.oci.image.manifest.v1+json",
        "digest": "sha256:bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",
        "size": 2,
        "urls": ["https://some.example/subject"],
        "annotations": {"subject": "2"},
        "data": "YmM=",
        "platform": {
            "architecture": "a",
            "os": "b",
            "os.version": "c",
            "os.features": ["d"],
            "variant": "e"
        },
        "artifactType": "application/our-subject"
    },
    "annotations": {"top": "0"}
}